Page 1
AQUAPHON ® AF 50 receiver Operating Instructions...
Page 2
AF 50 receiver Display Arrow keys ● Up key Filter key ● Down key Menu key Activation key Enter key Fastener knobs Belt clip Headphone socket Charging socket Connection for microphone/search coil Receiver AF 50 viewed from various angles Fig. 1:...
Page 3
AF 50 receiver Battery symbol for receiver Current noise level (bar) Current minimum noise level (marker) Current minimum noise level Minimum noise level ● last ● last but one Filter level Battery symbol wireless headphones Hearing protection level Volume Fig. 2: Display with main view during water leak detection Field strength ●...
Page 4
Illustration of warnings in this document WARNING! Risk of personal injury. Could result in serious injury or death CAUTION! Risk of personal injury. Could result in injury or pose a risk to health. NOTICE! Risk of damage to property.
Translations are produced to the best of our knowledge. The original German version is authoritative. Right of reproduction No part of this document may be edited, duplicated or circulated in any form without the express consent of Hermann Sewerin GmbH. Registered trademarks Registered trademarks are generally not indicated in this docu- ment.
● Observe all the applicable safety standards and accident pre- vention regulations. ● Use the product only as intended. ● Do not make any changes or modifications to the product unless these have been expressly approved by Hermann Sewerin GmbH. 2 │ 1 Introduction...
Page 9
● Only use accessories and consumables approved by Hermann Sewerin GmbH. ● Always observe the permitted operating and storage temper- atures. ● Handle the product carefully and safely, both during transport and when working. ● Always adequately cordon off the work area. ● When you are wearing headphones, you are not fully aware of ambient noise. Be especially vigilant, especially in environ- ments with an increased risk of accident (e.g. road traffic). ● Do not use the product if it is damaged or faulty.
AQUAPHON system Acoustic water leak detection Water leak detection includes preliminary detection and pinpoint- ing. A microphone must be connected to the AF 50 receiver to be located acoustically with the AQUAPHON system. The mi- crophone picks up noises and plays them back through a set of headphones.
Display of current-carrying lines If there is an energized line near the search coil, the receiver will display the power line symbol. Fig. 4: Display of a current-carrying line ( power line symbol) Hearing protection The system features a hearing protection function, which pro- tects the user from sudden loud sound interference. Such sound interference can occur, for example, when the user slips off the contact point using a microphone. Hearing protection is activated when the predefined hearing pro- tection threshold is exceeded.
Page 12
SK 10 case. Additional accessories can be added to the system at any time. Note: Detailed information about the headphones and the FG 50 gen- erator can be found in the associated operating instructions. Sewerin Digital Radio 6 │ 2 AQUAPHON system...
2.4.2 AF 50 receiver 2.4.2.1 Setup For overviews including all part names for the receiver, see the front cover flap (fig. 1). Keys The receiver has the following keys: ● Activation key Water leak detection: For starting and ending a measurement (listening to noises). Pipeline location: For automatic amplifier adjustment. ● Filter key Water leak detection: For switching between the main view and the Filter view.
Ports The receiver has the following connections: ● Charging socket For charging the rechargeable battery. The following can be connected: – M4 AC/DC adapter – M4 vehicle cable ● Connection for micro- For connecting a microphone or a phone/search coil search coil.
Water leak detection The Activation key is used to start and stop measurements. There are two operating modes available for this: ● Hold mode The Activation key is held down for the duration of the meas- urement. ● Toggle mode The Activation key is pressed briefly to start the measurement.
Page 16
− Previous minimum noise level When a measurement has been completed, what was until then the current minimum noise level is displayed as the last minimum noise level next to [1]. − Last but one minimum noise level When the next measurement has been completed, the last minimum noise level becomes the last but one minimum noise level and is displayed next to [2].
There are parts in the receiver that can be damaged mechan- ically or by electrostatic discharge when changing the battery. ● Only SEWERIN service personnel or other authorised special- ists may replace the lithium ion rechargeable battery. WARNING! Risk of explosion due to short-circuit Faulty lithium ion rechargeable batteries can explode due to internal short-circuit.
2.4.5 UM 50 universal microphone The UM 50 universal microphone can be used for both prelimi- nary detection and pinpointing. The UM 50 universal microphone has a permanently attached cable which is used to connect it to the receiver. Fig. 7: UM 50 universal microphone with microphone protector The following accessories are available for the UM 50 universal microphone:...
2.4.6 SK 3 search coil The SK 3 search coil is used for pipe location. The SK 3 search coil has a permanently attached cable which is used to connect it to the AF 50 receiver. Fig. 8: SK 3 search coil Differences between applications when locating The behaviour of the receiver when locating varies according to the application.
Using the system Preparing the system Accessories must be selected depending on the intended ap- plication. Water leak detection A microphone must be selected and prepared for the intend- ed use. The microphone can only be used in conjunction with screwed-on accessories.
3.2.2 Connecting headphones 3.2.2.1 F8 wireless headphones The A 50 receiver automatically detects the F8 wireless head- phones when they are within range. ● Switch on the headphones. Once connected, the small battery symbol for the wireless head- phones will appear in the main view. F8 wireless headphones ready for use Fig.
Adjusting the volume The volume determines the loudness for the playback of noises via the headphones. Any change can be heard immediately through the headphones. CAUTION! Health hazard Excessive noise can damage the hearing and lead to ir- reversible damage to health. ●...
Fig. 11: Headphones symbol when the system is ready for use Left-hand figure: symbol crossed out, i.e. no measurement in progress or hearing protection threshold exceeded during a measurement Right-hand figure: symbol not crossed out, i.e. measurement ongoing If the headphones symbol is crossed out during a measurement ... ● The hearing protection threshold has been exceeded during the measurement.
Various filter limits are available for adjusting the bandpass. The bandpass must be at least 300 Hz wide. Information about the available filter limits can be found in sec- tion 6.2.1.1. 3.4.2.2 Activating the notch filter When the notch filter is activated, the mains frequency (50 Hz or 60 Hz) is filtered out. This eliminates the influence of current-car- rying lines on the noise. Fig. 12: Filter view Top right: notch filter (here: 50 Hz) Bottom left: lower filter limit (here: 500 Hz) Bottom right: upper filter limit (here: 3000 Hz) The symbol for the upper filter limit is inverted, which means that this filter limit can be adjusted.
Performing pipe location Note: The AF 50 receiver continuously measures pipe location as soon as a search coil is connected. 3.5.1 Setting the frequency The receiving frequency must correspond to the frequency of the energized line. ● Keep pressing the Filter key until the receiving frequency cor- responds to the transmitting frequency of the generator.
Page 26
Fig. 13: Signal curve (above) and orientation of the SK 3 search coil over a line Left-hand figure: maximum method Right-hand figure: minimum method maximum method The field strength steadily increases when the coil approaches the line and reaches the maximum level when directly above it. The maximum method is well suited to preliminary detection. To use the maximum method: ●...
To use the maximum method: ● Hold the SK 3 search coil as fig. 13 shown in the right-hand figure. 3.5.3 Applying automatic amplifier adjustment Automatic amplifier adjustment allows display of the signal strength to be adjusted to local conditions during location. Amplifier adjustment is always advisable when location is not clear due to the signal strength being too low or too high. Ampli- fier adjustment results in weak signals being amplified and strong signals being reduced.
Settings Overview The receiver operating mode, the type of hearing protection and the hearing protection threshold can be configured individually. The individual settings are permanently saved until the next change. The factory settings can be restored at any time. The settings are changed in the Settings view. LIGHT ACTIVATION DISPLAY MUTE PROTECT RESET Fig. 15: Settings view Backlight (LIGHT) The receiver display features a backlight.
3. Change the setting. − Press the Down key to deactivate the function. − Press the Up key to activate the function. 4. Press the Menu key to apply the settings. The receiver will switch back to the main view. Operating mode (ACTIVATION) There is a choice of two operating modes for the Activation key.
Display rotation (DISPLAY) If the receiver is rotated through 180° about its longitudinal axis, the display follows the movement. Display rotation activated Display rotation deactivated Changing the DISPLAY setting The system is ready for use. The display shows the main view. 1. Press the Menu key. The Settings view appears. 2.
Hearing protection (MUTE) The hearing protection function determines whether noises above the hearing protection threshold can be listened to via the headphones. Listen to muted noise Do not listen to noise Changing the MUTE settings The system is ready for use. The display shows the main view. 1.
Page 32
2. Keep pressing the Enter key until PROTECT is inverted. 3. Change the setting. − Press the Down key to select a lower hearing protection threshold. − Press the Up key to select a higher hearing protection threshold. SEWERIN recommends pressing the Activation key to hear the effect of the change on the noise playback. 26 │ 4 Settings...
4. Press the Menu key to apply the settings. The receiver will switch back to the main view. Factory settings (RESET) This function restores all individual settings to the factory set- tings. Factory settings are the settings with which the receiver was supplied to the customer.
Maintenance Charging the batteries The batteries for the following components must be recharged when necessary: ● AF 50 receiver ● F8 headphones ● FG 50 generator The batteries are protected against overcharging. The compo- nents can therefore remain connected to the power supply after they are fully charged.
Fig. 16: SK 10 case White circles: connection cable Black arrow: connection socket (on the outside) 1. Place the components in the dedicated spaces in the case. 2. Connect the components using the connection cables. 3. Connect the case to the power supply using the L AC/DC adapter or the L vehicle cable.
● The lithium on battery may only be removed if you have legit- imate grounds to suspect that the battery may be defective. ● Only SEWERIN Service personnel or an authorized specialist may replace rechargeable batteries. French abbreviation for: Accord européen relatif au transport internation- al des marchandises Dangereuses par Route, *Engl.: European Agree-...
5.2.1 Identifying faulty batteries A lithium ion battery is considered to be faulty if one of the fol- lowing criteria applies: ● Housing damaged or badly deformed ● Liquid leaking from battery ● Smell of gas from battery ● Rise in temperature with the receiver switched off (more than hand-hot) ●...
(e.g. acidic or abrasive constituents) to clean the display sur- face. SEWERIN recommends Always remove significant contamina- tion immediately. Servicing SEWERIN recommends Have the system serviced regularly by SEWERIN Service or an authorized professional. Only regular servicing can ensure that the system is always ready for use. 32 │ 5 Maintenance...
Appendix Technical data 6.1.1 AF 50 receiver Device data Dimensions (W × D × H) 115 × 65 × 114 mm Weight 0.4 kg Material polycarbonate (housing) Certificate Certificates FCC, CE, IC, MIC Features Display 2" FSTN display (240 × 128 pixels, LED backlight) Processor DSP 16 bit Operation membrane keypad with 5 keys 1 activation key Operating conditions Operating temperature...
Page 40
Radio range > 2 m Transmission bandwidth 0 – 12 kHz Communication depending on the headphones used – F8 wireless headphones: SDR (Sewerin Digital Radio) – K3 headphones: by cable Power 10 mW Additional data Transport SK 10 case Shipping instructions...
6.1.2 UM 50 universal microphone Device data Dimensions (H × Ø) 90 × 29 mm (excluding cable) Weight 330 g Material stainless steel Features Interface phone jack 6.3 mm, straight Operating conditions Operating temperature -20 – 70 °C Storage temperature -20 – 70 °C Protection rating IP68 Permitted operating envi-...
6.2.2 Factory settings The receiver is supplied with the following default settings: Backlight activated Hold mode Display rotation activated Do not listen to noise Hearing protection threshold: level 4 PROTECT Bandpass Lower filter limit Upper filter limit 0 Hz 4000 Hz Notch filter Symbol Notch filter...
Other accessories are available for the system. Please contact our SEWERIN sales department for further information. Declarations of conformity Hermann Sewerin GmbH hereby declares that the A 50 receiver fulfils the requirements of the following directive: ● 2014/53/EU The complete declarations of conformity can be found online.
Need help?
Do you have a question about the AQUAPHON AF 50 and is the answer not in the manual?
Questions and answers